TR 1621
Indicator 210
Aerial 315
Airborne Cigar
Airborne Grocer
American Mandrel
Aspidistra
Briar
Briar (R)
Carpet II
Carpet III
Carpet IV
Carpet sweeper
Corona
Dartboard
Dina II
Drumstick
Fidget
Grocer II
Ground Cigar
Ground Grocer
Ground Mandrel
Jostle II
Jostle III
Jostle IV
Mandrel I
Mandrel II
Mandrel III
Mandrel IV
Mandrel V
Meerschaum II
Moonschine
Piperack
Rayon
Shiver
Tinsel
Tuba
Window
| Use | A jamming device to interfere with enemy RT channels in the 30-33 MHz, 38.3-42.5 MHz and 48-52 MHz wavebands. Range 50 miles. |
| RAF designation | ARI 5558 |
| Main items | TR3549 R1624 T1360 Indicator 178 |
| Remarks | Developed by TRE |
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| Use | Jamming enemy radar FuG 202 and 212 |
| RAF designation | ? |
| Main items | |
| Remarks | Not used, may 1944 |
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| Use | Jamming of enemy radar (Freya, Jagdschloss, Mammut & Wasserman) |
| RAF designation | ARI 5626 |
| US designation | SCR 183 |
| Main items | BC 1237 RC 183 T 1661 |
| Remarks | T1661P - 63-103 Mhz T1661Q - 92-113 Mhz T1661R - 143-203 Mhz |
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| Use | Codename for transmitters in the Dartboard |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | A ground transmitter operating in the 300-600 MHz band used to jam enemy Würzburg ground receivers. |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | A ground based device for triggering the airborne IFF set in the Egon system. |
| RAF designation | ? |
| Main items | |
| Remarks |
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| Use | Airborne jammer of German Wurzburg ground radar 300-600 Megacycle band. Later American developments allowed a more precise use. |
TR 1621 |
| RAF designation | ARI 5549 | |
| Main items | TR 1621 Indicator 210 Aerial 315 |
|
| Remarks | Developed by TRE |
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| Use | Device to spot jam enemy Wurzburg radar (475-585 Mhz Band) |  APR4 |
| RAF designation | ARI 5722 | |
| US designation | AN/APT-2 | |
| Main items | 3x Transmitter AN/APQ 9 1x Receiver AN/APR 4 4x Aerial AS-69/APT |
|
| Remarks | Carpet III is the American development of Carpet II |
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| Use | |
| RAF designation | ARI 5702 |
| US designation | AN/APT 5 |
| Main items | T 1942 |
| Remarks |
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| Use | Same as Carpet II |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | British ground transmitter operating at 2.5-6 MHz based at Rugby and Leafield. Used to transmit confusing R/T signals over the German night fighter RT control frequencies |
| RAF designation | |
| Main items | Captured German Fug 10 Receivers |
| Remarks |
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| Use | Ground-based interference from "ASPIDISTRA"of enemy RT and WT channels in the 300 kHz band |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | An American improvement of MANDREL IV airborne jamming device operating in the 95-210 MHz band. Also named PIPERACK when used to counter FuG 220 AI radar. |
| RAF designation | |
| US designation | AN/APT 1 |
| Main items | T21/APT 1 T28/APT 1 |
| Remarks | see piperack |
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| Use | A measure device designed to disrupt enemy high frequency W/T control channels in the 3-6 MHz band. |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | A measure device designed to disrupt enemy night-fighter control channels in the medium and high frequency bands. |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | A device designed to barrage jam the enemy's Wurzburg GCI and GL radar. |
| RAF designation | ARI 5567 |
| Main items | T 1630 |
| Remarks |
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| Use | A measure device designed to disrupt enemy night fighter control channels in the 38-42 MHz band. |
| RAF designation | FGRI 5633 |
| Main items | This device used 15 ground based transmitters in the U.K. |
| Remarks |
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| Use | A measure device designed to jam enemy AI radar in the 480-500 MHz band. |
| RAF designation | FGRI 5542 |
| Main items | R 1612 T 1613 |
| Remarks |
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| Use | A measure device designed to jam enemy EW radar in the 65-160 MHz band. |
| RAF designation | FGRI 5519 |
| Main items | TR 1431 |
| Remarks | in 1944 modified to 90-200 MHz |
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| Use | Airborne jamming equipment to disrupt enemy RT VHF communications, especially in armoured formations. |
| RAF designation | ARI 5154 |
| Main items | T 1360 |
| Remarks |
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| Use | |
| RAF designation | ARI 5523 |
| US designation | |
| Main items | T 1601 |
| Remarks |
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| Use | A device designed to provide high power, frequency modulated, continuous wave jamming of enemy R/T transmissions. |
| RAF designation | ARI 5289 |
| Main items | T 1524 |
| Remarks |
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| Use | Airborne radar jamming device operating in the 85-135 MHz waveband to conter the Freya early warning system. |
| RAF designation | ARI 5171 |
| Main items | T 1408 T 1661 |
| Remarks | test set TS 146 |
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| Use | |
| RAF designation | ARI 5625 |
| Main items | T 1656 |
| Remarks |
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| Use | A device to spot jam enemy EW radar in the 148-196 MHz Band |  |
| RAF designation | ARI 5672 | |
| Main items | TR 1657 | |
| Remarks |
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| Use | A device to spot jam enemy EW radar in the 148-200 MHz Band |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | |
| RAF designation | ARI 5769 |
| Main items | |
| Remarks |
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| Use | Modified Mandrel III designed to provide jamming in the 60-120 MHz band. |
| RAF designation | ARI 5624 |
| Main items | TR 3603 |
| Remarks | ground FGRI 5618 airborne ARI 5624 |
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| Use | Radio jamming device used by RAF to deceive the Freya radar's by returning their own signal in an amplified form giving the impression of a larger force that in fact existed. |
| RAF designation | ARI 5515 |
| Main items | TR 1427 |
| Remarks | Moonshine 50cm = ARI 5589 |
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| Use | An American developed device designed to jam enemy radar's in the 95-210 MHz band. |
| RAF designation | ARI 5699 |
| Main items | upto 6x AN/APT 1 T 1681 |
| Remarks | also known as Dina II |
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| Use | Ground-based interference of KNICKEBEIN in nightfighter control |
| RAF designation | - |
| Main items | |
| Remarks |
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| Use | An airborne transmitter used to jam Würzburg radar |
| RAF designation | - |
| Main items | Modified R 3003 (IFF) |
| Remarks | IFF MK2 |
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| Use | RAF airborne jamming device used by wireless operators to transmit engine noise over the German night fighter control frequencies. |
| RAF designation | ARI 5114 |
| Main items | T 1154 Microphone type 28 |
| Remarks | FGRI 5259 Ames FGRI 5114 in hut TR 3137 |
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| Use | a jamming device for Freya radar operating in the 70-200 MHz range |
| RAF designation | - |
| Main items | A 500 |
| Remarks |
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| Use | Strips of silver paper dropped by British aircraft to confuse the German ground radar's. |
| RAF designation | windows |
| US designation | chaff |
| Main items | strips of silver paper |
| Remarks |
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